Moscode 300

Discussion in 'Audio Hardware' started by gss, Oct 13, 2017.

  1. wild bill

    wild bill Active Member

    stockton, nj
    Just joined after I saw the postings on the Moscode 300. I found one, unmodified, two years ago and have been using it ever since. Couple of observations:
    resistors R34,36,37, and 39 run very, very hot. I replaced them with 5-10 watt ratings and they still run very hot. Can't imagine the original resistors are still functional. Is George Kaye still around? He never responded to my emails one-two years ago. Whatever. The power switch is unreliable, replace it if you can. I used one from a retired Hafler 220, works fine.If anyone is thinking of upgrading any components, I had a hard time finding CS1, a CR300 current regulator (obsolete now), found them on Ebay. Also C15, the 330V 880 mic capacitor is hard to find, but George Kaye himself said somewhere in DIY Audio that one can "use anything that fits that's over 100 mic." The amp is a blast, powers my homemade Jazzman Mark 5 ESLs. Love it.
  2. gss

    gss Forum Resident Thread Starter

    New Jersey
    Thanks for sharing and welcome to the forum.

    How is the hum on your unit? Did you replace the tubes?
  3. gss

    gss Forum Resident Thread Starter

    New Jersey
    Hello, all! Still making sure the Moscode is for me, but haven't had much of a chance to play with it because I don't have a separate preamp, and don't want to drop too much coin unless I'm sure I'll like the Moscode.

    Anyone have any opinions of using a Schiit Sys passive preamp in front of it? Seems like it might be all I need.

  4. TarnishedEars

    TarnishedEars Forum Resident

    Seattle, WA
    There is no way for anybody else to tell you whether you will like it or not. Your ears and your tastes are your own. Many of us can opine about it, but no matter how many good reviews you read, it might not be a good match for either your system or your ears.

    The good news though is that since it contains tubes, you aren't stuck with exactly one sound like you are with a 100% SS amp. You can roll tubes in to tailor the sound more to your own tastes.

    And yes, its hard to go wrong with a passive preamp, unless you either need gain or you need to drive a cable which is longer than about a meter. Although I personally prefer the sound of having a good tube preamp in the chain over that of running a passive.
    33na3rd likes this.
  5. 33na3rd

    33na3rd Forum Resident

    SW Washington, USA
    $49 seems like a reasonable amount for an experiment. Plus you've 15 days to try it out.
  6. gss

    gss Forum Resident Thread Starter

    New Jersey
    You know what? I think I'm overthinking this Moscode, and should probably unload it and get something that I really want (McIntosh).

    Wow, I feel so much better now! :wiggle:

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